Patents by Inventor Isamu Yoshitake

Isamu Yoshitake has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Central processor unit for data systems
    Patent number: D311388
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 16, 1990
    Assignee: Casio Computer Co., Ltd.
    Inventor: Isamu Yoshitake
  • Electronic cash register
    Patent number: D311547
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: October 23, 1990
    Assignee: Casio Computer Co., Ltd.
    Inventor: Isamu Yoshitake
  • Central processing unit
    Patent number: D311728
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 30, 1990
    Assignee: Casio Computer Co., Ltd.
    Inventor: Isamu Yoshitake
  • Keyboard for data processing system
    Patent number: D316405
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: April 23, 1991
    Assignee: Casio Computer Co., Ltd.
    Inventor: Isamu Yoshitake
  • Keyboard for data processing system
    Patent number: D317595
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: June 18, 1991
    Assignee: Casio Computer Co., Ltd.
    Inventor: Isamu Yoshitake
  • Automatic telephone message recorder
    Patent number: D350130
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: August 30, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Isamu Yoshitake, Toshio Igo
  • Automatic telephone message recorder
    Patent number: D350539
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: September 13, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Takashi Yatabe, Isamu Yoshitake
  • Automatic telephone message recorder
    Patent number: D350745
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: September 20, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kenji Tamura, Isamu Yoshitake, Takashi Yatabe
  • Cash register
    Patent number: D351402
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: October 11, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kenji Tamura, Isamu Yoshitake, Kouichi Sato
  • Electronic cash register
    Patent number: D409228
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: May 4, 1999
    Assignee: Casio Computer Co., Ltd.
    Inventor: Isamu Yoshitake